caa a22 4500 477052827 CHVBK 20180405111342.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00230362 doi (NATIONALLICENCE)springer-10.1007/BF00230362 Plastid differentiation during Cucurbita pepo (Cucurbitaceae) pollen grain development [Elektronische Daten] [M. Nepi, F. Ciampolini, E. Pacini] The development of plastids in the pollen of Cucurbita pepo was followed from meiosis to pollen maturation by quantitative light and electron microscopy. Plastids are initially undifferentiated, then divide, and at late microspore stage differentiate into amyloplasts containing starch. Later the amyloplasts form lobes and divide. Amyloplasts containing a single starch grain are present from the early bicellular stage. Plastid development is considered in relation to such cytoembryological features as the pollen does not dehydrate at anthesis and germination begins 3 min after pollination. Springer-Verlag, 1996 Cucurbita pepo nationallicence Pollen nationallicence Amyloplast nationallicence Plastid division nationallicence Plastid differentiation nationallicence Nepi M. Botany Section, Department of Environmental Biology, University of Siena, Via P.A. Mattioli 4, I-53100, Siena, Italy aut Ciampolini F. Botany Section, Department of Environmental Biology, University of Siena, Via P.A. Mattioli 4, I-53100, Siena, Italy aut Pacini E. Botany Section, Department of Environmental Biology, University of Siena, Via P.A. Mattioli 4, I-53100, Siena, Italy aut Sexual Plant Reproduction Springer-Verlag 9/1(1996-01-01), 17-24 0934-0882 9:1<17 1996 9 497 https://doi.org/10.1007/BF00230362 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00230362 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nepi M. Botany Section, Department of Environmental Biology, University of Siena, Via P.A. Mattioli 4, I-53100, Siena, Italy aut NATIONALLICENCE 700 1- Ciampolini F. Botany Section, Department of Environmental Biology, University of Siena, Via P.A. Mattioli 4, I-53100, Siena, Italy aut NATIONALLICENCE 700 1- Pacini E. Botany Section, Department of Environmental Biology, University of Siena, Via P.A. Mattioli 4, I-53100, Siena, Italy aut NATIONALLICENCE 773 0- Sexual Plant Reproduction Springer-Verlag 9/1(1996-01-01), 17-24 0934-0882 9:1<17 1996 9 497 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer